P

ParameterValuePresenceRule.Parameter

Description:
The parameter which will be evaluated to pass this rule.

public ElementId Parameter { get; set; }

Public Property Parameter As ElementId
Get
Set

public:
property ElementId^ Parameter {
	ElementId^ get ();
	void set (ElementId^ value);
}

Autodesk.Revit.Exceptions.ArgumentNullException

When setting this property: A non-optional argument was null